Night Shift and Location Services

I like the "Night Shift" display feature and its "Automatic" schedule. However, to enable it, I must also enable location services. If I enable location services, I notice the location services icon in the menu bar pops up many times a day to see where I am and probably relate this information to Apple. I do not like this as I do not fully trust Location Services. I do not use any other apps that require location services.

Night Shift does not need to use location services. There is a "Custom" schedule for Night Shift in which I should be able to set my current time zone. Alternately, I can manually set my own time zone in Settings and Night Shift could use that. That way, Night Shift would never need to use Location Services unless I am traveling.

What's really going on here?